Necesito practicar el ingles

help me in my english please i need practice
I need to practice this language

All I have to say is watch your punctuation and capitalization... What you wrote should be-

Help me in my english please. I need practice.
I need to practice this language.

You also didn't need the "I need practice." sentence, and remember "I" is always capitalized when it's alone. :)

First notebook entry: Introducing myself

Hello, i'm a girl, i from CHINA. I want to study english with a good teacher, so I entered this website.
I like english, so I decided to study english. Do you want to teach me?

You did pretty good :). The only things I noticed more than once is watch your punctuation, you tended to put the space before the period at the end of a sentence instead of after. And also make sure you capitalize "I" whenever you use it. :)...I'd also be up to helping you learn if you want :).

First notebook entry: introducing myself

I'm an MD, willing to become a geneticist ("to became what?", you might say).
I live for music but in a while, going on this way, I won't be able to play anymore :/
What else... ouh, here... I love English language, especially the British. I'd like to get as fluent as possible, I usually watch TV series and movies in English. I'm also planning to start a Portuguese course ASAP.
Besides, I'd like to make some new friend abroad =D
That's me. For now.

 You did really well, the only things I see you would want to fix is to say, "wanting to become a geneticist" ,"if things keep going this way" or just get rid of "going on this way" altogether, and "I love the English language."

The Second Day In Italki

Today is my second day in Italki.
I'm very happy. I have six foreign friends now. They are all very kind and helpful. I have learned a lot from them.
I learned something about English food,and something about America. I've also improved my English. My typing speed was very slow, but my friends didn't get angry. They have a lot of patience to teach me.
Thank you my friends.

Hi! I'm Hannah by the way, hope we can be friends too :)